Create a single-page app in a single HTML file with the following requirements:
- Name: Fun Game
- Goal: Jump over obstacles to survive as long as possible.
- Features: Increasing speed, high score tracking, retry button, and funny sounds for actions and events.
- The UI should be colorful, with parallax scrolling backgrounds.
- The characters should look cartoonish and be fun to watch.
- The game should be enjoyable for everyone.